公开(公告)号：US20230347745A1

公开(公告)日：2023-11-02

申请号：US18304597

申请日：2023-04-21

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xuejuan KONG ,  Yang ZHAO ,  Xin WU ,  Yankun XU

IPC: B60L3/00 ,  G06F11/07 ,  G06F1/24 ,  B60W10/08

CPC classification number: B60L3/0061 ,  G06F11/0757 ,  G06F1/24 ,  B60W10/08

Abstract: A drive apparatus and an electric vehicle are provided to implement fault monitoring functions of two control chips when one watchdog chip is configured. The drive apparatus includes a first control chip, a second control chip, a first drive circuit, a second drive circuit, a watchdog chip, and a reset shutdown circuit. The first drive circuit generates a drive signal of a first inverter. The second drive circuit generates a drive signal of a second inverter. The first control chip and the second control chip perform fault monitoring on each other.

公开(公告)号：US20220203864A1

公开(公告)日：2022-06-30

申请号：US17680775

申请日：2022-02-25

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xuejuan KONG ,  Yunwu ZHAO ,  Xing ZHANG

IPC: B60L58/13 ,  G01R31/3835 ,  B60L3/00 ,  G01R19/165

Abstract: This application discloses a voltage monitoring method, a voltage monitoring apparatus, and an electric vehicle. The voltage monitoring apparatus includes a power conversion module and a microcontroller electrically connected to the power conversion module. The power conversion module is configured to output a voltage. The microcontroller includes an ADC module, a monitoring module, and an IO module. The ADC module is configured to obtain an output voltage of the power conversion module, and determine whether the output voltage encounters an exception. The monitoring module is configured to: when the output voltage encounters an exception, output a control signal through the IO module. The power conversion module correspondingly stops outputting a voltage based on the control signal. Based on this, diagnostic coverage of the power conversion module can reach 99% for a single-point fault metric, thereby meeting a requirement of a corresponding level of ASIL D.